Brian Fundakowski Feldman <[EMAIL PROTECTED]> wrote:

> They're all synonymous, so I'd say that they're different names for a
> double-sided, high density 5.25" floppy.  The difference between 135
> and 96 is probably sector sizes.  In any case, I wouldn't worry over
> them at all.

Thank you!  Track densities of 5" and 3.5" disks are 96 and 135 tpi,
respectively.

> When's the last time you saw new modes for 5.25" floppies?  I'm not
> being sarcastic;  I'm just pointing out that they're all obsolete.

I know following disks:

  1 8"/5" HD double side 1024 bytes/sector  8 sectors/track, 77 cylinders
  2    5" DD double side  512 bytes/sector  8 sectors/track, 80 cylinders
  3    5" DD double side  512 bytes/sector  8 sectors/track, 80 cylinders
  4  3.5" DD double side  512 bytes/sector  8 sectors/track, 80 cylinders
  5 8"/5" HD double side  256 bytes/sector 26 sectors/track, 77 cylinders
  6  3.5" HD double side  256 bytes/sector 26 sectors/track, 77 cylinders
  7    5" DD double side  256 bytes/sector 16 sectors/track, 77 cylinders

and so on (including DEC PDP-11 :-)).

I'm trying to add 1, 2, 3 and 4.

-----------------------------------------------+--------------------------+
KATO Takenori <[EMAIL PROTECTED]>  |        FreeBSD           |
Dept. Earth Planet. Sci, Nagoya Univ.          |    The power to serve!   |
Nagoya, 464-8602, Japan                        |  http://www.FreeBSD.org/ |
                                               |http://www.jp.FreeBSD.org/|
++++ FreeBSD(98) 3.3R-Rev. 01 available!       +==========================+


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